1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright (C) 2018 - 2019 Intel Corporation 4 */ 5 #ifndef __PMSR_H 6 #define __PMSR_H 7 #include <net/cfg80211.h> 8 #include "core.h" 9 #include "nl80211.h" 10 #include "rdev-ops.h" 11 12 static int pmsr_parse_ftm(struct cfg80211_registered_device *rdev, 13 struct nlattr *ftmreq, 14 struct cfg80211_pmsr_request_peer *out, 15 struct genl_info *info) 16 { 17 const struct cfg80211_pmsr_capabilities *capa = rdev->wiphy.pmsr_capa; 18 struct nlattr *tb[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1]; 19 u32 preamble = NL80211_PREAMBLE_DMG; /* only optional in DMG */ 20 21 /* validate existing data */ 22 if (!(rdev->wiphy.pmsr_capa->ftm.bandwidths & BIT(out->chandef.width))) { 23 NL_SET_ERR_MSG(info->extack, "FTM: unsupported bandwidth"); 24 return -EINVAL; 25 } 26 27 /* no validation needed - was already done via nested policy */ 28 nla_parse_nested_deprecated(tb, NL80211_PMSR_FTM_REQ_ATTR_MAX, ftmreq, 29 NULL, NULL); 30 31 if (tb[NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE]) 32 preamble = nla_get_u32(tb[NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE]); 33 34 /* set up values - struct is 0-initialized */ 35 out->ftm.requested = true; 36 37 switch (out->chandef.chan->band) { 38 case NL80211_BAND_60GHZ: 39 /* optional */ 40 break; 41 default: 42 if (!tb[NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE]) { 43 NL_SET_ERR_MSG(info->extack, 44 "FTM: must specify preamble"); 45 return -EINVAL; 46 } 47 } 48 49 if (!(capa->ftm.preambles & BIT(preamble))) { 50 NL_SET_ERR_MSG_ATTR(info->extack, 51 tb[NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE], 52 "FTM: invalid preamble"); 53 return -EINVAL; 54 } 55 56 out->ftm.preamble = preamble; 57 58 out->ftm.burst_period = 0; 59 if (tb[NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD]) 60 out->ftm.burst_period = 61 nla_get_u32(tb[NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD]); 62 63 out->ftm.asap = !!tb[NL80211_PMSR_FTM_REQ_ATTR_ASAP]; 64 if (out->ftm.asap && !capa->ftm.asap) { 65 NL_SET_ERR_MSG_ATTR(info->extack, 66 tb[NL80211_PMSR_FTM_REQ_ATTR_ASAP], 67 "FTM: ASAP mode not supported"); 68 return -EINVAL; 69 } 70 71 if (!out->ftm.asap && !capa->ftm.non_asap) { 72 NL_SET_ERR_MSG(info->extack, 73 "FTM: non-ASAP mode not supported"); 74 return -EINVAL; 75 } 76 77 out->ftm.num_bursts_exp = 0; 78 if (tb[NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP]) 79 out->ftm.num_bursts_exp = 80 nla_get_u32(tb[NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP]); 81 82 if (capa->ftm.max_bursts_exponent >= 0 && 83 out->ftm.num_bursts_exp > capa->ftm.max_bursts_exponent) { 84 NL_SET_ERR_MSG_ATTR(info->extack, 85 tb[NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP], 86 "FTM: max NUM_BURSTS_EXP must be set lower than the device limit"); 87 return -EINVAL; 88 } 89 90 out->ftm.burst_duration = 15; 91 if (tb[NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION]) 92 out->ftm.burst_duration = 93 nla_get_u32(tb[NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION]); 94 95 out->ftm.ftms_per_burst = 0; 96 if (tb[NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST]) 97 out->ftm.ftms_per_burst = 98 nla_get_u32(tb[NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST]); 99 100 if (capa->ftm.max_ftms_per_burst && 101 (out->ftm.ftms_per_burst > capa->ftm.max_ftms_per_burst || 102 out->ftm.ftms_per_burst == 0)) { 103 NL_SET_ERR_MSG_ATTR(info->extack, 104 tb[NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST], 105 "FTM: FTMs per burst must be set lower than the device limit but non-zero"); 106 return -EINVAL; 107 } 108 109 out->ftm.ftmr_retries = 3; 110 if (tb[NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES]) 111 out->ftm.ftmr_retries = 112 nla_get_u32(tb[NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES]); 113 114 out->ftm.request_lci = !!tb[NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI]; 115 if (out->ftm.request_lci && !capa->ftm.request_lci) { 116 NL_SET_ERR_MSG_ATTR(info->extack, 117 tb[NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI], 118 "FTM: LCI request not supported"); 119 } 120 121 out->ftm.request_civicloc = 122 !!tb[NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC]; 123 if (out->ftm.request_civicloc && !capa->ftm.request_civicloc) { 124 NL_SET_ERR_MSG_ATTR(info->extack, 125 tb[NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC], 126 "FTM: civic location request not supported"); 127 } 128 129 out->ftm.trigger_based = 130 !!tb[NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED]; 131 if (out->ftm.trigger_based && !capa->ftm.trigger_based) { 132 NL_SET_ERR_MSG_ATTR(info->extack, 133 tb[NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED], 134 "FTM: trigger based ranging is not supported"); 135 return -EINVAL; 136 } 137 138 out->ftm.non_trigger_based = 139 !!tb[NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED]; 140 if (out->ftm.non_trigger_based && !capa->ftm.non_trigger_based) { 141 NL_SET_ERR_MSG_ATTR(info->extack, 142 tb[NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED], 143 "FTM: trigger based ranging is not supported"); 144 return -EINVAL; 145 } 146 147 if (out->ftm.trigger_based && out->ftm.non_trigger_based) { 148 NL_SET_ERR_MSG(info->extack, 149 "FTM: can't set both trigger based and non trigger based"); 150 return -EINVAL; 151 } 152 153 if ((out->ftm.trigger_based || out->ftm.non_trigger_based) && 154 out->ftm.preamble != NL80211_PREAMBLE_HE) { 155 NL_SET_ERR_MSG_ATTR(info->extack, 156 tb[NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE], 157 "FTM: non EDCA based ranging must use HE preamble"); 158 return -EINVAL; 159 } 160 161 return 0; 162 } 163 164 static int pmsr_parse_peer(struct cfg80211_registered_device *rdev, 165 struct nlattr *peer, 166 struct cfg80211_pmsr_request_peer *out, 167 struct genl_info *info) 168 { 169 struct nlattr *tb[NL80211_PMSR_PEER_ATTR_MAX + 1]; 170 struct nlattr *req[NL80211_PMSR_REQ_ATTR_MAX + 1]; 171 struct nlattr *treq; 172 int err, rem; 173 174 /* no validation needed - was already done via nested policy */ 175 nla_parse_nested_deprecated(tb, NL80211_PMSR_PEER_ATTR_MAX, peer, 176 NULL, NULL); 177 178 if (!tb[NL80211_PMSR_PEER_ATTR_ADDR] || 179 !tb[NL80211_PMSR_PEER_ATTR_CHAN] || 180 !tb[NL80211_PMSR_PEER_ATTR_REQ]) { 181 NL_SET_ERR_MSG_ATTR(info->extack, peer, 182 "insufficient peer data"); 183 return -EINVAL; 184 } 185 186 memcpy(out->addr, nla_data(tb[NL80211_PMSR_PEER_ATTR_ADDR]), ETH_ALEN); 187 188 /* reuse info->attrs */ 189 memset(info->attrs, 0, sizeof(*info->attrs) * (NL80211_ATTR_MAX + 1)); 190 err = nla_parse_nested_deprecated(info->attrs, NL80211_ATTR_MAX, 191 tb[NL80211_PMSR_PEER_ATTR_CHAN], 192 NULL, info->extack); 193 if (err) 194 return err; 195 196 err = nl80211_parse_chandef(rdev, info, &out->chandef); 197 if (err) 198 return err; 199 200 /* no validation needed - was already done via nested policy */ 201 nla_parse_nested_deprecated(req, NL80211_PMSR_REQ_ATTR_MAX, 202 tb[NL80211_PMSR_PEER_ATTR_REQ], NULL, 203 NULL); 204 205 if (!req[NL80211_PMSR_REQ_ATTR_DATA]) { 206 NL_SET_ERR_MSG_ATTR(info->extack, 207 tb[NL80211_PMSR_PEER_ATTR_REQ], 208 "missing request type/data"); 209 return -EINVAL; 210 } 211 212 if (req[NL80211_PMSR_REQ_ATTR_GET_AP_TSF]) 213 out->report_ap_tsf = true; 214 215 if (out->report_ap_tsf && !rdev->wiphy.pmsr_capa->report_ap_tsf) { 216 NL_SET_ERR_MSG_ATTR(info->extack, 217 req[NL80211_PMSR_REQ_ATTR_GET_AP_TSF], 218 "reporting AP TSF is not supported"); 219 return -EINVAL; 220 } 221 222 nla_for_each_nested(treq, req[NL80211_PMSR_REQ_ATTR_DATA], rem) { 223 switch (nla_type(treq)) { 224 case NL80211_PMSR_TYPE_FTM: 225 err = pmsr_parse_ftm(rdev, treq, out, info); 226 break; 227 default: 228 NL_SET_ERR_MSG_ATTR(info->extack, treq, 229 "unsupported measurement type"); 230 err = -EINVAL; 231 } 232 } 233 234 if (err) 235 return err; 236 237 return 0; 238 } 239 240 int nl80211_pmsr_start(struct sk_buff *skb, struct genl_info *info) 241 { 242 struct nlattr *reqattr = info->attrs[NL80211_ATTR_PEER_MEASUREMENTS]; 243 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 244 struct wireless_dev *wdev = info->user_ptr[1]; 245 struct cfg80211_pmsr_request *req; 246 struct nlattr *peers, *peer; 247 int count, rem, err, idx; 248 249 if (!rdev->wiphy.pmsr_capa) 250 return -EOPNOTSUPP; 251 252 if (!reqattr) 253 return -EINVAL; 254 255 peers = nla_find(nla_data(reqattr), nla_len(reqattr), 256 NL80211_PMSR_ATTR_PEERS); 257 if (!peers) 258 return -EINVAL; 259 260 count = 0; 261 nla_for_each_nested(peer, peers, rem) { 262 count++; 263 264 if (count > rdev->wiphy.pmsr_capa->max_peers) { 265 NL_SET_ERR_MSG_ATTR(info->extack, peer, 266 "Too many peers used"); 267 return -EINVAL; 268 } 269 } 270 271 req = kzalloc(struct_size(req, peers, count), GFP_KERNEL); 272 if (!req) 273 return -ENOMEM; 274 275 if (info->attrs[NL80211_ATTR_TIMEOUT]) 276 req->timeout = nla_get_u32(info->attrs[NL80211_ATTR_TIMEOUT]); 277 278 if (info->attrs[NL80211_ATTR_MAC]) { 279 if (!rdev->wiphy.pmsr_capa->randomize_mac_addr) { 280 NL_SET_ERR_MSG_ATTR(info->extack, 281 info->attrs[NL80211_ATTR_MAC], 282 "device cannot randomize MAC address"); 283 err = -EINVAL; 284 goto out_err; 285 } 286 287 err = nl80211_parse_random_mac(info->attrs, req->mac_addr, 288 req->mac_addr_mask); 289 if (err) 290 goto out_err; 291 } else { 292 memcpy(req->mac_addr, wdev_address(wdev), ETH_ALEN); 293 eth_broadcast_addr(req->mac_addr_mask); 294 } 295 296 idx = 0; 297 nla_for_each_nested(peer, peers, rem) { 298 /* NB: this reuses info->attrs, but we no longer need it */ 299 err = pmsr_parse_peer(rdev, peer, &req->peers[idx], info); 300 if (err) 301 goto out_err; 302 idx++; 303 } 304 305 req->n_peers = count; 306 req->cookie = cfg80211_assign_cookie(rdev); 307 req->nl_portid = info->snd_portid; 308 309 err = rdev_start_pmsr(rdev, wdev, req); 310 if (err) 311 goto out_err; 312 313 list_add_tail(&req->list, &wdev->pmsr_list); 314 315 nl_set_extack_cookie_u64(info->extack, req->cookie); 316 return 0; 317 out_err: 318 kfree(req); 319 return err; 320 } 321 322 void cfg80211_pmsr_complete(struct wireless_dev *wdev, 323 struct cfg80211_pmsr_request *req, 324 gfp_t gfp) 325 { 326 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 327 struct sk_buff *msg; 328 void *hdr; 329 330 trace_cfg80211_pmsr_complete(wdev->wiphy, wdev, req->cookie); 331 332 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 333 if (!msg) 334 goto free_request; 335 336 hdr = nl80211hdr_put(msg, 0, 0, 0, 337 NL80211_CMD_PEER_MEASUREMENT_COMPLETE); 338 if (!hdr) 339 goto free_msg; 340 341 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 342 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 343 NL80211_ATTR_PAD)) 344 goto free_msg; 345 346 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->cookie, 347 NL80211_ATTR_PAD)) 348 goto free_msg; 349 350 genlmsg_end(msg, hdr); 351 genlmsg_unicast(wiphy_net(wdev->wiphy), msg, req->nl_portid); 352 goto free_request; 353 free_msg: 354 nlmsg_free(msg); 355 free_request: 356 spin_lock_bh(&wdev->pmsr_lock); 357 list_del(&req->list); 358 spin_unlock_bh(&wdev->pmsr_lock); 359 kfree(req); 360 } 361 EXPORT_SYMBOL_GPL(cfg80211_pmsr_complete); 362 363 static int nl80211_pmsr_send_ftm_res(struct sk_buff *msg, 364 struct cfg80211_pmsr_result *res) 365 { 366 if (res->status == NL80211_PMSR_STATUS_FAILURE) { 367 if (nla_put_u32(msg, NL80211_PMSR_FTM_RESP_ATTR_FAIL_REASON, 368 res->ftm.failure_reason)) 369 goto error; 370 371 if (res->ftm.failure_reason == 372 NL80211_PMSR_FTM_FAILURE_PEER_BUSY && 373 res->ftm.busy_retry_time && 374 nla_put_u32(msg, NL80211_PMSR_FTM_RESP_ATTR_BUSY_RETRY_TIME, 375 res->ftm.busy_retry_time)) 376 goto error; 377 378 return 0; 379 } 380 381 #define PUT(tp, attr, val) \ 382 do { \ 383 if (nla_put_##tp(msg, \ 384 NL80211_PMSR_FTM_RESP_ATTR_##attr, \ 385 res->ftm.val)) \ 386 goto error; \ 387 } while (0) 388 389 #define PUTOPT(tp, attr, val) \ 390 do { \ 391 if (res->ftm.val##_valid) \ 392 PUT(tp, attr, val); \ 393 } while (0) 394 395 #define PUT_U64(attr, val) \ 396 do { \ 397 if (nla_put_u64_64bit(msg, \ 398 NL80211_PMSR_FTM_RESP_ATTR_##attr,\ 399 res->ftm.val, \ 400 NL80211_PMSR_FTM_RESP_ATTR_PAD)) \ 401 goto error; \ 402 } while (0) 403 404 #define PUTOPT_U64(attr, val) \ 405 do { \ 406 if (res->ftm.val##_valid) \ 407 PUT_U64(attr, val); \ 408 } while (0) 409 410 if (res->ftm.burst_index >= 0) 411 PUT(u32, BURST_INDEX, burst_index); 412 PUTOPT(u32, NUM_FTMR_ATTEMPTS, num_ftmr_attempts); 413 PUTOPT(u32, NUM_FTMR_SUCCESSES, num_ftmr_successes); 414 PUT(u8, NUM_BURSTS_EXP, num_bursts_exp); 415 PUT(u8, BURST_DURATION, burst_duration); 416 PUT(u8, FTMS_PER_BURST, ftms_per_burst); 417 PUTOPT(s32, RSSI_AVG, rssi_avg); 418 PUTOPT(s32, RSSI_SPREAD, rssi_spread); 419 if (res->ftm.tx_rate_valid && 420 !nl80211_put_sta_rate(msg, &res->ftm.tx_rate, 421 NL80211_PMSR_FTM_RESP_ATTR_TX_RATE)) 422 goto error; 423 if (res->ftm.rx_rate_valid && 424 !nl80211_put_sta_rate(msg, &res->ftm.rx_rate, 425 NL80211_PMSR_FTM_RESP_ATTR_RX_RATE)) 426 goto error; 427 PUTOPT_U64(RTT_AVG, rtt_avg); 428 PUTOPT_U64(RTT_VARIANCE, rtt_variance); 429 PUTOPT_U64(RTT_SPREAD, rtt_spread); 430 PUTOPT_U64(DIST_AVG, dist_avg); 431 PUTOPT_U64(DIST_VARIANCE, dist_variance); 432 PUTOPT_U64(DIST_SPREAD, dist_spread); 433 if (res->ftm.lci && res->ftm.lci_len && 434 nla_put(msg, NL80211_PMSR_FTM_RESP_ATTR_LCI, 435 res->ftm.lci_len, res->ftm.lci)) 436 goto error; 437 if (res->ftm.civicloc && res->ftm.civicloc_len && 438 nla_put(msg, NL80211_PMSR_FTM_RESP_ATTR_CIVICLOC, 439 res->ftm.civicloc_len, res->ftm.civicloc)) 440 goto error; 441 #undef PUT 442 #undef PUTOPT 443 #undef PUT_U64 444 #undef PUTOPT_U64 445 446 return 0; 447 error: 448 return -ENOSPC; 449 } 450 451 static int nl80211_pmsr_send_result(struct sk_buff *msg, 452 struct cfg80211_pmsr_result *res) 453 { 454 struct nlattr *pmsr, *peers, *peer, *resp, *data, *typedata; 455 456 pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS); 457 if (!pmsr) 458 goto error; 459 460 peers = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_PEERS); 461 if (!peers) 462 goto error; 463 464 peer = nla_nest_start_noflag(msg, 1); 465 if (!peer) 466 goto error; 467 468 if (nla_put(msg, NL80211_PMSR_PEER_ATTR_ADDR, ETH_ALEN, res->addr)) 469 goto error; 470 471 resp = nla_nest_start_noflag(msg, NL80211_PMSR_PEER_ATTR_RESP); 472 if (!resp) 473 goto error; 474 475 if (nla_put_u32(msg, NL80211_PMSR_RESP_ATTR_STATUS, res->status) || 476 nla_put_u64_64bit(msg, NL80211_PMSR_RESP_ATTR_HOST_TIME, 477 res->host_time, NL80211_PMSR_RESP_ATTR_PAD)) 478 goto error; 479 480 if (res->ap_tsf_valid && 481 nla_put_u64_64bit(msg, NL80211_PMSR_RESP_ATTR_AP_TSF, 482 res->ap_tsf, NL80211_PMSR_RESP_ATTR_PAD)) 483 goto error; 484 485 if (res->final && nla_put_flag(msg, NL80211_PMSR_RESP_ATTR_FINAL)) 486 goto error; 487 488 data = nla_nest_start_noflag(msg, NL80211_PMSR_RESP_ATTR_DATA); 489 if (!data) 490 goto error; 491 492 typedata = nla_nest_start_noflag(msg, res->type); 493 if (!typedata) 494 goto error; 495 496 switch (res->type) { 497 case NL80211_PMSR_TYPE_FTM: 498 if (nl80211_pmsr_send_ftm_res(msg, res)) 499 goto error; 500 break; 501 default: 502 WARN_ON(1); 503 } 504 505 nla_nest_end(msg, typedata); 506 nla_nest_end(msg, data); 507 nla_nest_end(msg, resp); 508 nla_nest_end(msg, peer); 509 nla_nest_end(msg, peers); 510 nla_nest_end(msg, pmsr); 511 512 return 0; 513 error: 514 return -ENOSPC; 515 } 516 517 void cfg80211_pmsr_report(struct wireless_dev *wdev, 518 struct cfg80211_pmsr_request *req, 519 struct cfg80211_pmsr_result *result, 520 gfp_t gfp) 521 { 522 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 523 struct sk_buff *msg; 524 void *hdr; 525 int err; 526 527 trace_cfg80211_pmsr_report(wdev->wiphy, wdev, req->cookie, 528 result->addr); 529 530 /* 531 * Currently, only variable items are LCI and civic location, 532 * both of which are reasonably short so we don't need to 533 * worry about them here for the allocation. 534 */ 535 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 536 if (!msg) 537 return; 538 539 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PEER_MEASUREMENT_RESULT); 540 if (!hdr) 541 goto free; 542 543 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 544 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 545 NL80211_ATTR_PAD)) 546 goto free; 547 548 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->cookie, 549 NL80211_ATTR_PAD)) 550 goto free; 551 552 err = nl80211_pmsr_send_result(msg, result); 553 if (err) { 554 pr_err_ratelimited("peer measurement result: message didn't fit!"); 555 goto free; 556 } 557 558 genlmsg_end(msg, hdr); 559 genlmsg_unicast(wiphy_net(wdev->wiphy), msg, req->nl_portid); 560 return; 561 free: 562 nlmsg_free(msg); 563 } 564 EXPORT_SYMBOL_GPL(cfg80211_pmsr_report); 565 566 static void cfg80211_pmsr_process_abort(struct wireless_dev *wdev) 567 { 568 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 569 struct cfg80211_pmsr_request *req, *tmp; 570 LIST_HEAD(free_list); 571 572 lockdep_assert_held(&wdev->mtx); 573 574 spin_lock_bh(&wdev->pmsr_lock); 575 list_for_each_entry_safe(req, tmp, &wdev->pmsr_list, list) { 576 if (req->nl_portid) 577 continue; 578 list_move_tail(&req->list, &free_list); 579 } 580 spin_unlock_bh(&wdev->pmsr_lock); 581 582 list_for_each_entry_safe(req, tmp, &free_list, list) { 583 rdev_abort_pmsr(rdev, wdev, req); 584 585 kfree(req); 586 } 587 } 588 589 void cfg80211_pmsr_free_wk(struct work_struct *work) 590 { 591 struct wireless_dev *wdev = container_of(work, struct wireless_dev, 592 pmsr_free_wk); 593 594 wdev_lock(wdev); 595 cfg80211_pmsr_process_abort(wdev); 596 wdev_unlock(wdev); 597 } 598 599 void cfg80211_pmsr_wdev_down(struct wireless_dev *wdev) 600 { 601 struct cfg80211_pmsr_request *req; 602 bool found = false; 603 604 spin_lock_bh(&wdev->pmsr_lock); 605 list_for_each_entry(req, &wdev->pmsr_list, list) { 606 found = true; 607 req->nl_portid = 0; 608 } 609 spin_unlock_bh(&wdev->pmsr_lock); 610 611 if (found) 612 cfg80211_pmsr_process_abort(wdev); 613 614 WARN_ON(!list_empty(&wdev->pmsr_list)); 615 } 616 617 void cfg80211_release_pmsr(struct wireless_dev *wdev, u32 portid) 618 { 619 struct cfg80211_pmsr_request *req; 620 621 spin_lock_bh(&wdev->pmsr_lock); 622 list_for_each_entry(req, &wdev->pmsr_list, list) { 623 if (req->nl_portid == portid) { 624 req->nl_portid = 0; 625 schedule_work(&wdev->pmsr_free_wk); 626 } 627 } 628 spin_unlock_bh(&wdev->pmsr_lock); 629 } 630 631 #endif /* __PMSR_H */ 632